| 摘要 |
<p>1386018 Laminated insulating mats ROCKWOOL AS 9 May 1972 [12 May 1971] 21547/72 Heading B5N An insulating layer comprising strips of compressed mineral wool fibres is bonded to a facing sheet by means of a wax adhesive which on cooling changes to the solid state at 20-90‹ C., the phase change taking place over a range of at least 1‹ C. The insulating layer is made by cutting strips from a felt and superposing the strips with their cut edges co-planar. The fibres may be of rock, glass or slag and may have been oriented by roller compression of the felt after deposition, so as to lie perpendicular to the facing in the final product. The facing sheet may be paper, preferably coated with polyethylene or polyvinyl chloride. Preferably the wax adhesive is fluid at 75-90‹ C., and completely solid at 55‹ C., and the phase change takes place within a range of 10‹ C.; a suitable commercial product is specified. The adhesive is preferably applied to the facing sheet.</p> |
